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#13: Florence + The Machine - Shake It Out

Their second album, Ceremonials, was one of the most hotly-anticipated records of the year, and holy shit Florence + The Machine definitely did not disappoint. It's bigger and more powerful than their debut, Lungs - and darker.

"'Shake It Out' is one of those magical songs that was written in about half an hour," Florence Welch told triple j. "I'm a big worrier and I kind of hang on to all these regrets, and I guess whenever you're hungover they seem to be worse. I just wanted to write a song that maybe I could exorcise some of those feelings."

'Shake It Out' is the third song to feature in this year's Hottest 100 (following 'No Light, No Light' at #36 and 'What The Water Gave Me' at #42).